Note 2 - Revenue Recognition (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Oct. 01, 2024	Sep. 30, 2024	Oct. 01, 2023
Write-off of Rent Receivable	$ 2,200,000
Contract with Customer, Liability, Current	0		$ 0			$ 0
Capitalized Contract Cost, Net, Current	500,000		500,000			$ 0
Contract with Customer, Liability, Cost of Revenue Recognized	0	$ 0	0	$ 0
Contract with Customer, Liability, Revenue Recognized		20,000		700,000
Contract with Customer, Receivable, after Allowance for Credit Loss	12,400,000	13,200,000	12,400,000	13,200,000	$ 12,600,000		$ 11,100,000
Revenue, Remaining Performance Obligation, Amount	92,000,000		92,000,000
Contract with Customer, Liability, Revenue Recognized, Including Balance	0		0
Transferred over Time [Member]
Contract with Customer, Liability, Revenue Recognized	$ 500,000	$ 300,000	$ 700,000	$ 1,200,000